Learning Core Data for iOS: A Hands-On Guide to Building Core Data Applications

Snippet Demo Method

Throughout this book there’s code that demonstrates a point and yet isn’t required in the final application. Listing 2.2 shows a new demo method along with an updated applicationDidBecomeActive method that calls demo after ensuring Core Data is ready with [self cdh].

Listing 2.2 AppDelegate.m: demo

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- (void)demo {    if (debug==1) {        NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));    }}- (void)applicationDidBecomeActive:(UIApplication *)application{    if (debug==1) {        NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));    }    [self cdh];    [self demo];}

Update Grocery Dude as follows to implement the demo method:

1. Add the demo method from